Fracture apparatus



(No Model.) 'I

f l W.H.DB CAMP.

FRAGTURE APPARATUS. No". 401,933. .Patented Apr. 23, 1889.'

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UNITED STATES i PATENT OFFICE.

VVIIILIAM I-l. DE `CAMP, OF GRAND RAPIDS, MIC/HIGAN.1

FRACTURE APPARATUS.

SPECIFICATION forming part of Letters Patent No. 401,933, dated April23, 1889.

Application led July 9, 1888. Serial No. 279,462. (No model.)

To all whom it ina/ zj concern:

Be it known that I, WILLIAM H. DE CAMP, a citizen ot' the United States,residing at Grand Rapids, in the county of Kent and State of Michigan,have invented certain new and useful Improvements in Hinge-Joints forSurgeons Splints; andI do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to improvements in the hinge-joints of bars orstrips used to connect surgeons splints; and the objects of my inventionare to provide a joint that can be readily adjusted and secured; thatwill not require a screw-driver, wrench, or other tools to manipulate;that will be compact and convenient; that will not become loosened orhave lost motion in the joints while in use; that can be adjusted at anyangle, either upward or downward, and that can be stopped from movingbeyond a certain point in one di rection and tree to move in the otherdirection, or released entirely, at pleasure. I accomplish these resultsby the mechanism illustrated in the accompanying drawings,- in which-Figure 1 is a plan of a connecting bar or. strip for surgeons splintsprovided with my device; Fig. 2, a horizontal section of the same on theline @c m of Fig. l; and Fig. 3, a plan view of the saine, showingdifferent adjustment ot parts.

Like letters refer to like parts in all the figures.

A A are the bars .or strips which connect 4the splints, to which theyare attached at their outer ends byany suitable device engaging with theholes I, and connected at their adjacent ends by a rivet, B, to form ahingejoint moving in the plane of their sides.

C is a segment of a disk (somewhat more than-one-half) having an openingat its center for the rivet B, and a series of openings,

E, having radial sides, said openings being arranged at equal distancesfrom each other and at equal distances from the center B and alsoadapted to receive the stop-pins F. Said disk is located between thestrips A A and the auxiliary strips A A, which latter are hinged attheir adjacent ends, the same as A A, by means of the rivet B, andsecured at their outer ends to the strips A A by rivets G G. Theselatter strips may be the saine length of the strips A or A or they mayextend but little beyond the disk C, as at A. These strips A A and A A"areseparated a suflicient distance to embrace the disk C, either bybending, as shown in A', or by a Washer, H. All of the described stripsA are provided with openings E, corresponding with those in the disk C.

The stop-pinsl` F have radial sides adapted to fit the openings E, andare attached to and held .in place by the flexible springs D D', whichextend a short distance beyond said pins, and are turned slightlyoutward at their outer ends for convenience of manipulation, and arepivoted at their inner ends upon the rivet B.

The operation of my device is as follows: All the parts being free torotate about the rivet B, the openings E in the strips A can be made tocoincide with any of the openings in the disk C and the respectivestop-pins engaged with said openings in both. The joint can thus belocked either in a right line or at any angle. ends with the device theangle is reversed in position, as shown in Fig. 3. By throwing eitherpin entirely outside the disk, as D', Fig. 3,the corresponding strip, A,is entirely free. By engaging the pin F in an opening in the disk onlyat one side of the strip A said strip is stopped by said pin in itsmovement in that direction only. By placing a lstrip at each side of thedisk and securing their outer ends to each other any lateral exion ofthe device will not release the pin by separating the parts, but willtend to compress the inner strip vand press it toward the outer one,thus keeping the parts lirmly in contact. The openings E and the pins F,being narrower at their inner sides, and the said pin moving away fromthe center B as it is withdrawn and toward the same as it is inserted,is firmly wedged between the converging sides of the openings and alllost motion avoided and taken up. v

What I claim, and wish to secure, is as follows:

l. In combination with surgeons splints, connecting-bars having a joint,and a disk By detaching and changing IOO the combination of jointed barshavingopenings for a stop-pin, a disk with conter coincident with thejoint of said bars and having corresponding openings for said stop-pin,and a stop-pin attached to a flexible spring pivoted at the center ofsaid disk, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

WILLIAM H. DE CAMP.

\\'itnesses:

JOHN IVI. KEMPIs, LUTHER V. MoULToN.

